Fastr is a parser for term and variant recognition. Fastr take as input a
corpus and a list of terms and ouputs the indexed corpus in which terms and
variants are recognized.
Fastr can be used in two modes:
- controlled indexing: input consists of a corpus and a list of terms,
- free indexing: input only consists of a corpus, the list of terms is
automatically acquired from the corpus.
Fastr uses the following resources:
- the corpus and the list of terms are tagged by the TreeTagger:
http://www.ims.uni-stuttgart.de/Tools/DecisionTreeTagger.html
- if available, a list of morphological families and a list of semantic links
are used to calculate morphological and semantic variation. See sample files
- /usr/share/fastr/der-families-xx
- /usr/share/fastr/sem-classes-xx or ./lib/sem-links-xx
for the format (xx is the name of the language [en|fr]).
Perl modules are provided in order to generate these data from WordNet and
CELEXfor the English language.
The formalism of Fastr is close to PATR-II.